1. Install NodeJS from http://nodejs.org
2. Open the terminal and install typescript module globally npm install -g typescript
3. Install typings (for supporting normal JS libraries to be autocompleted in typescript) module globally npm install -g typings
4. Install a good IDE (Pst... install VSCode http://code.visualstudio.com)

First, install all NPM dependencies. Go to the root of the project and type in terminal: npm install

Then, start the project node start

Container of our application

Startup or bootstrap file of our application

Root component of our application

Configuration file for typescript compiler. How to compile/transpile our typescript to javascript file.

This is the place where we refer typescript definition files.

When we use javascript libraries, we must import typescript definition file for static type checking and intelissense

Standard NodeJS dependency configuration

For each typescript file, the compiler generates two more file.

One of them is the transpiled javascript file, which will be the file that is going to actually run on the browser.

The other is the .map file, which is used during debugging to relate a line in typescript to javascript.

All the building blocks of Angular 2 are essentially plain typescript files with some class annotations or decorators.

Example:

@Component({
    selector: 'my-app',
    template: `<h1>Hello Angular</h1>`
})
export class AppComponent {}